From patchwork Fri Sep 6 17:43:23 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: John Cabaj X-Patchwork-Id: 1981997 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.ubuntu.com (client-ip=185.125.189.65; helo=lists.ubuntu.com; envelope-from=kernel-team-bounces@lists.ubuntu.com; receiver=patchwork.ozlabs.org) Received: from lists.ubuntu.com (lists.ubuntu.com [185.125.189.65]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4X0k9S5Zyhz1y1D for ; Sat, 7 Sep 2024 03:43:40 +1000 (AEST) Received: from localhost ([127.0.0.1] helo=lists.ubuntu.com) by lists.ubuntu.com with esmtp (Exim 4.86_2) (envelope-from ) id 1smczb-0005kU-PF; Fri, 06 Sep 2024 17:43:31 +0000 Received: from smtp-relay-internal-1.internal ([10.131.114.114] helo=smtp-relay-internal-1.canonical.com) by lists.ubuntu.com with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.86_2) (envelope-from ) id 1smczZ-0005k5-LS for kernel-team@lists.ubuntu.com; Fri, 06 Sep 2024 17:43:29 +0000 Received: from mail-io1-f72.google.com (mail-io1-f72.google.com [209.85.166.72]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by smtp-relay-internal-1.canonical.com (Postfix) with ESMTPS id 779163F0F8 for ; Fri, 6 Sep 2024 17:43:29 +0000 (UTC) Received: by mail-io1-f72.google.com with SMTP id ca18e2360f4ac-82a3fa4edbdso532172939f.1 for ; Fri, 06 Sep 2024 10:43:29 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1725644608; x=1726249408; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=3NMnKfLSrZo5KjdKVcB0x42BJy+oUY4ljEb348Skzbo=; b=quWkx4k+ycc8fSGSEhUQWEhNFj5aeenRX40L/9VGkG7jMeo4AGWSzZ7m55DVA5nV4Y nfP9l95qtlIDpgpEAlehv9209eeyyrMQpQmCsNWusBPrOzqYgSNC8sQirMyfOa0GMZVR CZWfCKySdaAAsujchaP/dvR0zmcbz2EHB0sXVceygNMT55x7kyYVfcFCHaP45VY9PiTh n+RUjyoqWpa1d9/BQYuVinnWQCpN704BL2+416ddXf8Y8NN5sU34hcuTP5Ta7cq6vaLY gHbm1MUXPj/auaiy8kY4dcPEaMkk663W/c5Itjq57yRUHibIuYMtCyNaBvX/TW9e+p9k wHFg== X-Gm-Message-State: AOJu0YxTwO7A1fAtay/4Odl9xL8APWSrkMuy1NKUQVgpritOAQdVPj6v 7YkERlIqVW9p4mvVSBQOAkUfTwP5NpFQsJ0Wv9KLHTPbe6VRwg4AS6q4iDBupRCPKPmJnyYLkKO fvAL50i5DWJKZ7bvACMG7owHoDQdE90i6lvFr1ZeP5CIRfSS8Rvh6IpF53DrD6gZ1xsuKHJ24I4 ph07AHMd96IQ== X-Received: by 2002:a05:6602:3fc8:b0:82a:5237:ea81 with SMTP id ca18e2360f4ac-82a5238381amr2134652639f.17.1725644608056; Fri, 06 Sep 2024 10:43:28 -0700 (PDT) X-Google-Smtp-Source: AGHT+IEQ4+tg5GH38E8qh4jCDNGVaSQ2wR487Uj/T137f5yzvHduZ77xkM3aKsMq378PUs2oE+/vag== X-Received: by 2002:a05:6602:3fc8:b0:82a:5237:ea81 with SMTP id ca18e2360f4ac-82a5238381amr2134650639f.17.1725644607674; Fri, 06 Sep 2024 10:43:27 -0700 (PDT) Received: from smtp.gmail.com (h208-73-92-250.mdtnwi.broadband.dynamic.tds.net. [208.73.92.250]) by smtp.gmail.com with ESMTPSA id 8926c6da1cb9f-4d083846631sm524731173.85.2024.09.06.10.43.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 06 Sep 2024 10:43:27 -0700 (PDT) From: John Cabaj To: kernel-team@lists.ubuntu.com Subject: =?utf-8?q?=5BSRU=5D=5Bo/n=3Alinux-azure=5D=5BPATCH_0/1_v2=5D_Revert?= =?utf-8?q?_fix_for_=22Kernel_fails_to_enable_XSAVE_when_running_in_a_?= =?utf-8?q?=E2=80=9Cv5=E2=80=9D_AMD_SEV-SNP_VM=22?= Date: Fri, 6 Sep 2024 12:43:23 -0500 Message-ID: <20240906174326.773072-1-john.cabaj@canonical.com> X-Mailer: git-send-email 2.43.0 MIME-Version: 1.0 X-BeenThere: kernel-team@lists.ubuntu.com X-Mailman-Version: 2.1.20 Precedence: list List-Id: Kernel team discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: kernel-team-bounces@lists.ubuntu.com Sender: "kernel-team" BugLink: https://bugs.launchpad.net/bugs/2079841 SRU Justification [Impact] * LP #2069204 disabled CET Shadow Stack on SEV-SNP due to CPUID emulation bug not being fixed in VMs until October 2024. * This issue is now fixed, so the patch can be reverted. [Fix] * Revert "UBUNTU: SAUCE: x86/hyperv: temporarily disable CET SS on SEV-SNP due to a paravisor bug" [Test Plan] * Compile tested * Boot tested [Regression potential] * Reverting back to previous state, so regression very unlikely. * Changes isolated, minimal regression risk [Other info] * SF #00387447 John Cabaj (1): Revert "UBUNTU: SAUCE: x86/hyperv: temporarily disable CET SS on SEV-SNP due to a paravisor bug" arch/x86/kernel/cpu/mshyperv.c | 21 --------------------- 1 file changed, 21 deletions(-) Acked-by: Thibault Ferrante Acked-by: Magali Lemes